Running inflexible after installing
1. Host mounting surface is not matched with the slewing bearing then leads to work hard as a state of negative clearance for slewing bearing.
2. Gear meshing is not very well or there is impurity between gears.
1. Reprocess the plane to match the requirements. Or add spacer.
2. Adjust the gear meshing clearance as the requirement, especially in the point of jumping division.
3. Ensuring there is no sundries between the gears.
4. Replace the slewing bearing with a larger tolerance of unit.